Improved horse-power



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` l NITED STATES PATENT OFFICEa S. W. DAVIS, OF PLATTSBURG, YORK.

IMPRovED HORSE-POWER.

To all whom it may concern:

Be it known that I, S. W. DAVIS, of Plattsburg, in the county of Clintonand State of New York, have invented a new and useful Improvement inHorse'Power; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the same, reference being had to theaccompanyin g drawings, making a part of this specilication, in which-Figure l is a side sectional elevation of my improvement.Fig.2isaplanviewofthesame. Fig. 3 is a partial sectional elevation,showing the mode of hanging the decks.

Similar letters of reference indicate correspending parts.

This invention is designed as an improvement on what is known as Pittsanti-friction surface-roll horse-power. The frame of the machine isconstructed in the same manner as that usually adopted in all therolling-floor horse-power machines.'

A A represent what I term the roll-gow ernor wheels. They are placed onthe main or gear shaft B ofthe horse-power, inside of the chain ofrolls,as shown. One of these wheels, A', may turn independently of the shaftB, being secured thereon in the proper position by a collar on each sideof it..

The periphery of the wheel A is composed of a series of segments of'circles, c, to correspond to the size of the rolls m and the distancebetween them. The construction and arrangement of these segments is suchthat each segment receives and embraces nearly half of the body of oneof the rolls, and thus draws the same in a very firm and uniformmanner/in a direct path. The rolls, as they move over the decks O, arethus kept in a position always at right angles, and all tendency of therolls to press sidewise out of a direct path is overcome, and great easeof movement in the rolls is thus secured.

There is one of these goveruingwheels, A or A', to each string ofrolls-viz., two to a onehorse power and three to a two-horse powerandthey are placed in such a position on the main shaft as to be in frontof the corresponding decks C, as shown. The string of rolls isconstructed in the same manner as in all. rolling-oored horse-powers.

The decks C are hung in a novel and improved way. The decks are made ofscant- Iing dressed perfectly straight and true, with their extremitiescurved, as shown.

The rolls pass from the governer-wheel directly'upon the upper curvedextremities of dered self-adjusting by having wrists c at their i undersides, which fit into boxes d at the upper sides of the girts h, asshown in Figs. l and 3. The decks are prevented from being displacedfrom their proper position by means of the open guard-frame E, whichprojects from the under side ofthe decks below and in front of thewrists and journals, as shown, each of said guards having atransverse-pin, 0l. within it, which enters the cross-girl; h andprevents the guard-frames, and with it the decks, from rising out ofplace, but permitting all the lateral movement that may be necessary forcomplete self-adjustment of the decks. By having the decks thus madeself-adjusting their Lipper surfaces will always be parallel, and therolls will not have any tendency to draw off upon either side, so thatthe rolls will run on a straight path, c, with the least amount offriction.

Another feature of my improvement consists in dispensing with'the guidesor side projections commonly used on the upper side of the decks whichhave a tendency to retain the dust which collects on thetop of the decksand obstructs the pressure of the rolls.

I construct the decks with an entirely open space, j, throughout thelength of its upper surface except at the extremities thereof', where Ihave raised edges or guides 7c 7c to guide the rolls to and from thesurface of the decks, as shown. This open space j wholly prevents theaccumulation of dust, dirt, and other obstructions and thus facilitatesthe easy movement of the rolls.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent- The combination of the wrists c, boxes d, and theguard-frame e, by which the decks O are rendered self-adjustable andsecured against displacement.

S. W. DAVIS.

Witnesses:

E. M. CHASE, S. G. DAVIS.

